Patent · US Active

Chromoionophore and method of determining sodium ions

US7858383B2 · kind B2 · utility

11Cited by

4References

11Claims

0Family size

Assignee

OPTI Medical Systems, Inc. · US

Inventors

Huarui He · Alpharetta, US
Chao Lin · Alpharetta, US
Neeta Raje · Alpharetta, US
Chusheng Liu · Atlanta, US

Key dates

Filing date	May 2, 2007
Grant date	Dec 28, 2010
Priority date	—
Expiry date	Mar 18, 2029

Classification

Technology area (CPC G)Physics
CPC primaryG01N33/84
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The invention relates to methods of determining sodium ions in a sample, wherein the ions are contacted with a compound having chromophoric moiety and an ionophoric moiety, where the ionophoric moiety interacts with the sodium ions present in the sample, resulting in the chromophoric moiety changing its radiation absorption properties in the ultraviolet and visible regions of the spectrum. For example, a change in an intensity of an absorption maximum is measured and the ion concentration is determined accordingly.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.